00263nam a2200097Ia 4500008004100000082001600041100002100057245004100078260003800119300000800157140113s9999    xx            000 0 und d  a577.1    K5  a"Guttereund, H."  aIntroduction to the study of enzymes  a1965bBlackwell Sci. Pub.cOxford  a335